I used to teach a beautiful sexy 18 year old girl named Tina, science. She was in her 12th class. She had huge boobs, and a sexy figure. When ever I u...ed to go to her place to teach her, she used to wear tops with plunging necklines, reveling her huge tits and mini skirts. Her parents were both doing jobs, so they never used to be present. And I being naturally male used to have a permanent hard cock whenever I used to be present with her. But, my decency did not permit me to take advantage of. It was one of the strongest ones she had ever had. John unloaded in her cunt. Bill rolled her over so he was on the bottom, still in her ass. John moved up to her mouth and Nick moved to her cunt. Jill sucked John's cum covered cock while Nick and Bill fucked her holes. Bill was next as he filled her shit tube with his cum. They rolled over again so she was on top of Nick. Bill pulled out and moved to her head. She pushed him away and sharply told him NO. Bill took a handful of her hair. John grabbed Genny's arm "Come with me, slut!" he said, pulling her down the hallway to the bedroom. There he shut the door. Genny's heart began to race and he took her over to the side of the bed. He went over to the chest he kept at the foot of the bed. He rummaged around in the chest bringing out some sections of nylon rope.He began by rolling Genny over onto her stomach and pulling her hands behind her back. He bound her wrists together behind her back then, while she was on her stomach, he. And boredom usually meant masturbation. She considered her collection of toys, smiling at the achievement of sexual freedom after so many years of shyness, blushing and running from her sexual needs.Although she had always been shy and quiet, she wasn't always the good girl people expected. Her straight, mouse-brown hair, coke-bottle glasses (now much thinner, thanks to polycarbonate lenses!), and modest clothing gave the impression of a polite, utterly restrained young woman and her demeanor.